690954211 has 2 divisors, whose sum is σ = 690954212. Its totient is φ = 690954210.

The previous prime is 690954113. The next prime is 690954217. The reversal of 690954211 is 112459096.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 690954211 - 2⁷ = 690954083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (690954217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345477105 + 345477106.

It is an arithmetic number, because the mean of its divisors is an integer number (345477106).

Almost surely, 2^690954211 is an apocalyptic number.

690954211 is a deficient number, since it is larger than the sum of its proper divisors (1).

690954211 is an equidigital number, since it uses as much as digits as its factorization.

690954211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 690954211 is about 26286.0078939348. The cubic root of 690954211 is about 884.0627446540.

The spelling of 690954211 in words is "six hundred ninety million, nine hundred fifty-four thousand, two hundred eleven".